As anyone who has spent months, and sometimes years, designing something on paper can tell you; "stuff happens" when it hits the manufacturing floor.
By then (unless it is a show stopper), it just gets built as designed. There just is no time to halt production and run out and buy several thousand door stops.
If some one on the floor sees the problem, it "may" get up channeled to the design folks for resolution on the next year's model. Then again, "The not invented here" or "not your job" glitch may keep "the fix" out of next year's model too.
This is not an RV industry problem, it is a universal problem.
Lou, Laura, & Freya the wonder dog
2008 GMC Sierra 3000HD Crewcab SB Allison Duramax
2019 Flagstaff 8529FLS - Pullrite 3300
HAM CALLSIGN - KC3FFW